Sash-balance



No. 6|6,947. v Patented Jan. 3, I899. 2. m ,LINDLEY. SASH BALANCE.

(Application filed Mar. 23, 1898.)

. (No Model.)

1 m m. rim (4 m um I HHHH WITNESSES N //V VEN r00 NITED STATES PATENT OFFICE.

ZACI-IARY M. LINDLEY, OF CARTI-IAGE, MISSOURI.

BASH-BALANCE.

SPECIFICATION forming part of Letters Patent 1%. 616,947, dated January 2, 1899.

Application filed March 23, 1898- $eria1 No. 674,912. (No model.)

To all whom it may concern.-

Be it known that I, ZACHARY M. LINDLEY, a citizen of the United States, residing at Carthage, in the county of Jasper and State of Missouri, have invented a new and useful Improvement in Devices for Controlling Balanced lVindow-Sashes, of which the following is a specification.

My improvement is directed to sash-balances in which the sash are connected by a balancing-cord controlled by a catch; and the precise improvement includes, in combination with the balancing-cord and its controlling-catch, a spring arranged to exert its tension downward upon the catch for aiding in raising the lower sash, as will be set out in the claims at the end of the description.

The accompanying drawings illustrate my said improvement, in Which Figure 1 shows in elevation the windowsash with their connected controlling rack device. Fig. 2 is a vertical section of the same. Fig. 3 shows the sash-controlling rack device in enlarged views of the slotted side of the rack and in longitudinal and cross sections of the same.

To the lower sash and preferably mediately thereof is secured to the upper and lower bars a rack lof tubular construction, within which a catch is fitted to slide vertically in its function of controlling the raising and lowering of the upper sash. The tubular rack is preferably of sheet metal vertically slotted, the edges of the slot intersected by coincident transverse notches 2 2 at suitable distances apart and standing on the inner side of the sash. Within the slotted rack is fitted a slide adapted to engage the .notches in the edges of the slot and provided for this purpose with a spring constantly tending to force the catch outward into engagement with the racknotches. A simple construction for the sliding catch for this purpose is to form it of a plate with its upper edge 3 lipped outward, so that it will slide Within the tube and efiect its automatic engagement with the notches thereof as it is moved vertically within said tube. The sliding catch is a steel plate bent so that the slide part 4 will form the back to means of a cord 6, passed over a pulley 7, depending from the top of the frame and attached to the top bar 8 of the upper sash and to the back plate 4 of the sliding catch. To the lipped part5 of this catch is fixed a knob or handle 9, adapted to slide in the slot of the tubular rack and by which the catch is pressed inward to disengage it from the rack-notches 2 2 when it is desired to slide the catch therein to open and to close the upper sash. When the upper sash is closed, the sliding catch serves to connect it with the lowersash, and the locking of the lower sash serves also to lock the upper sash by means of the cord and its connected sliding catch.

Any suitable locking device may be pro-.

vided for the lower sash, such device, as shown at 10, consisting of an, eccentric-actuated clamp fixed to the vertical bar of the sash for pressure against the frame.

The tubular rack being fastened mediately to the-top and bottom bars serves to brace the sash when supporting the weight of the upper sash. f

To render it easier to raise the upper sash when open, I may provide a coil-spring 11 within the tubular rack connected to its upper end and constantly exerting its tension downward upon the back part of the sliding catch, so that when the latter is pulled down to raise the upper sash the spring will contribute its lifting force upon the lifting descending movement of the slide.

Ordinarily the tubular rack will be in the vertical plane of the middle sash-bar; but it is obvious the rack may be applied to one of the sash-stiles.

It will be noted that the arrangement of the catch within the rack also places the catchconnecting cord within the rack and within the coil-spring acting upon the catch.

While I have thus described the preferred embodiment of my invention, it will be evident to those skilled in the art that the de tails of construction may be varied without departing from the spirit of my improvement.

I claim-- 1 1. The combination with the sashes, their balancing-cord, a rack on the lower sash, and a catch engaging said rack and connected with said balancing-cord, of a coiled spring arranged to connect the rack and the catch and exert its tension downward on the catch downward-acting force upon said catch, and

for the purpose stated. a suspending-cord connecting said sliding 2. In balanced window-sashes, and in 00111- catch and upper sash. hination with the sashes, a tubular rack se- In testimony whereof I have hereunto 5 cured to the lower sash, slotted vertically, the signed my name this 23d day of March, A. D. 15

edges of the slot forming the rack, a catch 1898.

vertically movable Within said rack and hav- ZAGHARY M. LINDLEY. ing a spring-engaging function therewith, a In presence ofcoil-spring within the rack connecting its A. E. H. JOHNSON,

:0 upper end and the said catch and having a A. ROLAND JOHNSON. 

